:root {
  font-family: PingFang SC, system-ui, Avenir, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  color-scheme: light dark;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 100px;
}

a {
  font-weight: 500;
  color: #646cff;
  text-decoration: inherit;
}

a:hover {
  color: #535bf2;
}

h1 {
  font-size: 3.2em;
  line-height: 1.1;
}

button {
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 0.4em 0.8em;
  font-size: 1em;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.25s;
  outline: none;
  margin-top: 10px;
}

button:hover {
  border-color: #646cff;
}